No it's about nuclear waste and where to store it, it's about how expensive it is to build a nuclear power plant (bc of regulations so they don't goo boom) and it's about how much you have to subsidize it to make the electricity it produces affordable at all.
Economically it's just not worth it. Renewables are just WAY cheaper.
And much of the PR problem is related to waste. The main push towards alternative energy sources comes from people worried about the long term consequences of burning fossil fuels. These same people worry about the long term consequences of nuclear waste production, so nuclear sabotages itself on this front.